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    Transparent host-side caching of virtual disks located on shared storage
    11.
    发明授权
    Transparent host-side caching of virtual disks located on shared storage 有权
    位于共享存储上的虚拟磁盘的透明主机侧缓存

    公开(公告)号：US09454487B2

    公开(公告)日：2016-09-27

    申请号：US13922985

    申请日：2013-06-20

    Applicant: VMware, Inc.

    Inventor： Thomas A. Phelan ,  Mayank Rawat ,  Deng Liu ,  Kiran Madnani ,  Sambasiva Bandarupalli

    IPC: G06F12/08 ,  G06F9/455

    CPC classification number: G06F12/0866 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/0685 ,  G06F9/455 ,  G06F9/45558 ,  G06F9/5088 ,  G06F12/0871 ,  G06F2009/45579 ,  G06F2212/217

    Abstract: Techniques for using a host-side cache to accelerate virtual machine (VM) I/O are provided. In one embodiment, the hypervisor of a host system can intercept an I/O request from a VM running on the host system, where the I/O request is directed to a virtual disk residing on a shared storage device. The hypervisor can then process the I/O request by accessing a host-side cache that resides one or more cache devices distinct from the shared storage device, where the accessing of the host-side cache is transparent to the VM.

    Abstract translation: 提供了使用主机侧缓存来加速虚拟机（VM）I / O的技术。 在一个实施例中，主机系统的管理程序可以拦截来自在主机系统上运行的VM的I / O请求，其中I / O请求被定向到驻留在共享存储设备上的虚拟磁盘。 然后，管理程序可以通过访问驻留一个或多个与共享存储设备不同的高速缓存设备的主机侧缓存来处理I / O请求，其中主机侧缓存的访问对VM是透明的。

    THREAD CACHE ALLOCATION
    12.
    发明申请
    THREAD CACHE ALLOCATION 有权
    线程缓存分配

    公开(公告)号：US20150067262A1

    公开(公告)日：2015-03-05

    申请号：US14015784

    申请日：2013-08-30

    Applicant: VMware, Inc.

    Inventor： Sandeep Uttamchandani ,  Li Zhou ,  Fei Meng ,  Deng Liu

    IPC: G06F12/08

    CPC classification number: G06F12/0848 ,  G06F9/50 ,  G06F9/5016 ,  G06F9/5077 ,  G06F12/08

    Abstract: Systems and techniques are described for thread cache allocation. A described technique includes monitoring input and output accesses for a plurality of threads executing on a computing device that includes a cache comprising a quantity of memory blocks, determining a respective reuse intensity for each of the threads, determining a respective read ratio for each of the threads, determining a respective quantity of memory blocks for each of the partitions by optimizing a combination of cache utilities, each cache utility being based on the respective reuse intensity, the respective read ratio, and a respective hit ratio for a particular partition, and resizing one or more of the partitions to be equal to the respective quantity of the memory blocks for the partition.

    Abstract translation: 系统和技术描述为线程高速缓存分配。 所描述的技术包括监视在计算设备上执行的多个线程的输入和输出访问，所述线程包括包含大量存储器块的高速缓存，为每个线程确定相应的重用强度，确定每个线程的相应读取比率 线程，通过优化高速缓存实用程序的组合来确定每个分区的相应数量的存储器块，每个高速缓存实用程序基于相应的重用强度，相应的读取比率以及特定分区的相应命中率，以及调整大小 一个或多个分区等于分区的存储块的相应数量。

    Techniques for Implementing Hybrid Flash/HDD-based Virtual Disk Files
    13.
    发明申请
    Techniques for Implementing Hybrid Flash/HDD-based Virtual Disk Files 有权
    实现基于混合闪存/ HDD的虚拟磁盘文件的技术

    公开(公告)号：US20150006788A1

    公开(公告)日：2015-01-01

    申请号：US13931409

    申请日：2013-06-28

    Applicant: VMware, Inc.

    Inventor： Deng Liu ,  Sandeep Uttamchandani ,  Li Zhou ,  Mayank Rawat

    IPC: G06F3/06

    CPC classification number: G06F3/0685 ,  G06F3/0604 ,  G06F3/0611 ,  G06F3/0655 ,  G06F3/0659 ,  G06F9/45558 ,  G06F2009/45579 ,  G06F2212/217

    Abstract: Techniques for utilizing flash storage as an extension of hard disk (HDD) based storage are provided. In one embodiment, a computer system can store a first subset of blocks of a logical file in a first physical file residing on a flash storage tier, and a second subset of blocks of the logical file in a second physical file residing on an HDD storage tier. The computer system can then receive an I/O request directed to one or more blocks of the logical file and process the I/O request by accessing the flash storage tier or the HDD storage tier, the accessing being based on whether the one or more blocks are part of the first subset of blocks stored in the first physical file.

    Abstract translation: 提供了使用闪存作为基于硬盘（HDD）的存储的扩展的技术。 在一个实施例中，计算机系统可以将存储在闪存存储层上的第一物理文件中的逻辑文件的块的第一子集存储在驻留在HDD存储器上的第二物理文件中的逻辑文件块的第二子集 层。 计算机系统然后可以接收针对逻辑文件的一个或多个块的I / O请求，并通过访问闪存存储层或HDD存储层来处理该I / O请求，该访问基于该一个或多个 块是存储在第一个物理文件中的块的第一个子集的一部分。

    TECHNIQUES FOR DYNAMICALLY RELOCATING VIRTUAL DISK FILE BLOCKS BETWEEN FLASH STORAGE AND HDD-BASED STORAGE
    14.
    发明申请
    TECHNIQUES FOR DYNAMICALLY RELOCATING VIRTUAL DISK FILE BLOCKS BETWEEN FLASH STORAGE AND HDD-BASED STORAGE 有权
    用于动态存储和基于硬盘的存储之间的虚拟磁盘文件块的动态技术

    公开(公告)号：US20150006787A1

    公开(公告)日：2015-01-01

    申请号：US13931309

    申请日：2013-06-28

    Applicant: VMware, Inc.

    Inventor： Deng Liu ,  Wei Zhang ,  Xiaoyun Zhu ,  Mayank Rawat ,  Sandeep Uttamchandani ,  Li Zhou ,  Jianzhe Tai

    IPC: G06F3/06

    CPC classification number: G06F3/0685 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0649

    Abstract: Techniques for dynamically managing the placement of blocks of a logical file between a flash storage tier and an HDD storage tier are provided. In one embodiment, a computer system can collect I/O statistics pertaining to the logical file, where a first subset of blocks of the logical file are stored on the flash storage tier and where a second subset of blocks of the logical file are stored on the HDD storage tier. The computer system can further generate a heat map for the logical file based on the I/O statistics, where the heat map indicates, for each block of the logical file, the number of times the block has been accessed. The computer system can then identify, using the heat map, one or more blocks of the logical file as being performance-critical blocks, and can move data between the flash and HDD storage tiers such that the performance-critical blocks are placed on the flash storage tier.

    Abstract translation: 提供了用于在闪存存储层和HDD存储层之间动态管理逻辑文件块的位置的技术。 在一个实施例中，计算机系统可以收集与逻辑文件相关的I / O统计信息，其中逻辑文件的块的第一子集存储在闪存存储层上，并且逻辑文件的块的第二子集存储在 HDD存储层。 计算机系统可以基于I / O统计信息进一步生成用于逻辑文件的热图，其中热图针对逻辑文件的每个块指示块已经被访问的次数。 计算机系统然后可以使用热图将逻辑文件的一个或多个块识别为性能关键块，并且可以在闪存和HDD存储层之间移动数据，使得性能关键块被放置在闪存上 存储层。

    Techniques for implementing hybrid flash/HDD-based virtual disk files
    15.
    发明授权
    Techniques for implementing hybrid flash/HDD-based virtual disk files 有权

    公开(公告)号：US10657101B2

    公开(公告)日：2020-05-19

    申请号：US15990360

    申请日：2018-05-25

    Applicant: VMware, Inc.

    Inventor： Deng Liu ,  Sandeep Uttamchandani ,  Li Zhou ,  Mayank Rawat

    IPC: G06F16/00 ,  G06F16/172 ,  G06F3/06 ,  G06F9/455 ,  G06F16/188

    Abstract: Techniques for utilizing flash storage as an extension of hard disk (HDD) storage are provided. In one embodiment, a computer system stores a subset of blocks of a logical file in a first physical file, associated with a first data structure that represents a filesystem object, on flash storage and a subset of blocks, associated with a second data structure that represents a filesystem object comprising tiering configuration information that includes an identifier of the first physical file, in a second physical file on HDD storage. The computer system processes an I/O request directed to the logical file by directing it to either the physical file on the flash storage or the HDD storage by verifying that the tiering configuration information exists in the data structure and determining whether the one or more blocks are part of the first subset of blocks or the second subset of blocks.

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